Cartridge brush



FIG. 1 is a first, bottom perspective view of a cartridge brush;

FIG. 2 is a second, bottom perspective view of the cartridge brush of FIG. 1;

FIG. 3 is a first, top perspective view of the cartridge brush of FIG. 1;

FIG. 4 is a second, top perspective view of the cartridge brush of FIG. 1;

FIG. 5 is an enlarged bottom view of the cartridge brush of FIG. 1;

FIG. 6 is an enlarged top view of the cartridge brush of FIG. 1;

FIG. 7 is a first side view of the cartridge brush of FIG. 1, the opposite side being identical thereto; and,

FIG. 8 is a second side view of the cartridge brush of FIG. 1, the opposite side being identical thereto. 

CLAIM The ornamental design for a cartridge brush, as shown and described. 